We knew it wasn't a media problem, and that's why none of our posts said "use better media"
I think your problem is related to buggy drivers from nvidia, and quite a lot of users are having different problems with them. With those filters removed and using Ner0's ASPI, do you still get a freeze while verifying?
As for the other computer's slow reading, follow this guide completely (removing controllers/etc) and it should get faster than 2x speeds